Respiratory mask facial seal



FIG. 1 is a front elevational view of a respiratory mask facial sealshowing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof, the right side viewbeing a reverse image thereof; and,

FIG. 6 is an elevational cross-section view thereof taken along lineVI-VI of FIG. 1.

The ornamental design for a respiratory mask facial seal, as shown anddescribed.